[ GLSA 202209-07 ] Mrxvt: Arbitrary Code Execution

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Gentoo Linux Security Advisory                           GLSA 202209-07
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Mrxvt: Arbitrary Code Execution
     Date: September 25, 2022
     Bugs: #791004
       ID: 202209-07

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Synopsis
========

A vulnerability has been discovered in Mrxvt which could allow for
arbitrary code execution

Background
==========

Mrxvt is a multi-tabbed rxvt clone with XFT, transparent background and
CJK support.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  x11-terms/mrxvt            <= 0.5.4                  Vulnerable!

Description
===========

Mrxvt mishandles certain escape sequences, some of which allow for shell
command execution.

Impact
======

An attacker with sufficient access to write arbitrary text to the Mrxvt
terminal could execute arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

Gentoo has discontinued support for Mrxvt. We recommend that users
remove it:

  # emerge --ask --depclean "x11-terms/mrxvt"

References
==========

[ 1 ] CVE-2021-33477
      https://nvd.nist.gov/vuln/detail/CVE-2021-33477

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202209-07

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

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